Democratic presidential candidate Hillary Clinton is facing questions about money, access and influence while she was secretary of state. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP

In New Hampshire on Tuesday, Hillary Clinton weighed in on the trade deal without taking sides. "Well, any trade deal has to produce jobs and raise wages and increase prosperity and protect our security," she said. Andrew Burton/Getty Images hide caption

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Reporters and campaign staffers rush to their cars to get to Hillary Clinton's first Iowa campaign stop. Tamara Keith/NPR hide caption

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Hillary Clinton has described herself as the most famous person you don't really know. And as she launches into her second presidential campaign, she'll be reintroducing herself to voters who largely think they have her figured out. Mel Evans/AP hide caption

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Jeralean Talley addresses the congregation as her pastor, Reverend Dana Darby, holds the microphone for her during a celebration of her 115th birthday. Rebecca Cook/Reuters /Landov hide caption

itoggle caption Rebecca Cook/Reuters /Landov

Hillary Clinton in June 1969 at the Rodham family home. She was featured in a Life magazine story called "The Class of '69." Lee Balterman/The LIFE Premium Collection/Getty Images hide caption

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Don't expect a big rally with thousands of cheering supporters to launch Hillary Clinton's campaign. For her second run at the presidency, she's out to prove she is taking nothing for granted. Yana Paskova/Getty Images hide caption

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A cropped version of the original photo of Hillary Clinton on this page. Kris Connor/Getty Images hide caption

itoggle caption Kris Connor/Getty Images